I have never really been dissatisfied with the jig knobs I ordered from Rockler a while back. They feature long brass inserts, and a rounded and comfortable low-profile 5- point star-shaped grip. A recess at the top allows them to be used with bolts as a stem knob in a pinch with so-so results.
But, I have also seen some really, really badly designed knobs elsewhere and have heard a few horror stories as well. It seems that the engineering team at Woodpeckers have had a few bad experiences of their own, leading them to create their own Multi-Knobs.
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The Woodpeckers Multi-Knobs look pretty robust, and also look to be quite large and comfortably sized. They are available in 1/4″ and 3/8″ standard hardware sizes, and can be used with either a nut or bolt that us seated before use.
Although it is not mentioned in the product page or preview video, I imagine that it should be possible to switch a knob from “stem” mode to “threaded” mode.
The best part? These knobs are made in the USA and are priced at less than $1.50 Each! They’re sold in packs of 4 or 12 and 1/4″ and 3/8″ sizes.
New Woodpeckers Multi-Knob Knobs via Woodpeckers
http://www.youtube.com/watch?v=jgzWmyYqcP8
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Benjamen Johnson
I’ve been making my own knobs because Rockler never has them in stock and I’m sick of paying $4 for each knob at my local hardware stores.
Wow $14 bucks for a 12 pack, and they can be converted from through to stud. Hard to beat that! It would be nice if they made 5/16″ knobs to match T-bolts though.
Jack
I like these knobs too and have used them many times. I wish they came in black to I could use them of actual product.